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hslcolormap

version 1.3 (431 KB) by Aslak Grinsted
Generate pleasing HSL colormaps easily.

6 Downloads

Updated 04 Feb 2015

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Generate hue-saturation-lightness colormaps

USAGE: hslcolormap(N,H,S,L)

INPUTS:
N: number of colors in colormap.
H: hue stops (optional). %can also be specified using a string: rygcbmRYGCBM
S: saturation stops (optional)
L: Lightness stops (optional)

The stops are placed evenly over the colorscale. Parameter examples:
H=[0 1/6]; %colorscale runs from red to yellow
S=[0 1]; %gray to fully saturated
L=[.3 1 .3]; % dark-bright-dark

Using L with two-stops (e.g. L=[.2 .8]) makes it easy to distinguish
high and low values.

Using a symmetric L with 3 stops (e.g. L=[.2 1 .2]) is useful for divergent
colorscales.

Discontinuities in the colormap can be indicated with nans.


EXAMPLE:
surf(peaks(200),'edgecolor','none');
caxis([-6 6])
hslcolormap(300,'g.m',1,[.1 1 .1]);
colorbar




(c) Aslak Grinsted 2014

Cite As

Aslak Grinsted (2020). hslcolormap (https://www.mathworks.com/matlabcentral/fileexchange/48586-hslcolormap), MATLAB Central File Exchange. Retrieved .

Comments and Ratings (3)

sohrab

Aslak Grinsted

the dot inserts a discontinuity in the hue at that point.

Ray Lee

Can you explain the effect of dot in the hue codes?

MATLAB Release Compatibility
Created with R2014b
Compatible with any release
Platform Compatibility
Windows macOS Linux

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